OsdEnvironment.c revision 193530
1/*- 2 * Copyright (c) 2000,2001 Michael Smith 3 * Copyright (c) 2000 BSDi 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28#include <sys/cdefs.h> 29__FBSDID("$FreeBSD: head/sys/amd64/acpica/OsdEnvironment.c 193530 2009-06-05 18:44:36Z jkim $"); 30 31/* 32 * 6.1 : Environmental support 33 */ 34#include <sys/types.h> 35#include <sys/bus.h> 36#include <sys/linker_set.h> 37#include <sys/sysctl.h> 38 39#include <contrib/dev/acpica/include/acpi.h> 40#include <contrib/dev/acpica/include/actables.h> 41 42static u_long amd64_acpi_root; 43 44SYSCTL_ULONG(_machdep, OID_AUTO, acpi_root, CTLFLAG_RD, &amd64_acpi_root, 0, 45 "The physical address of the RSDP"); 46 47ACPI_STATUS 48AcpiOsInitialize(void) 49{ 50 return(0); 51} 52 53ACPI_STATUS 54AcpiOsTerminate(void) 55{ 56 return(0); 57} 58 59ACPI_PHYSICAL_ADDRESS 60AcpiOsGetRootPointer(void) 61{ 62 u_long ptr; 63 64 if (amd64_acpi_root == 0 && 65 (resource_long_value("acpi", 0, "rsdp", (long *)&ptr) == 0 || 66 AcpiFindRootPointer((ACPI_SIZE *)&ptr) == AE_OK) && 67 ptr != 0) 68 amd64_acpi_root = ptr; 69 70 return (amd64_acpi_root); 71} 72